i18n.cpp

电驴的源代码

		while (pLangs->lid){
			if (pLangs->bSupported && pLangs->lid == lid){
				FreeLangDLL();

				bool bLoadedLib = false;
				if (pLangs->lid == LANGID_EN_US){
					_hLangDLL = NULL;
					bLoadedLib = true;
				}
				else{
					CString strLangDLL = rstrLangDir;
					strLangDLL += pLangs->pszISOLocale;
					strLangDLL += _T(".dll");
					if (CheckLangDLLVersion(strLangDLL)){
						_hLangDLL = LoadLibrary(strLangDLL);
						if (_hLangDLL)
							bLoadedLib = true;
					}
				}
				if (bLoadedLib)
					return true;
				break;
			}
			pLangs++;
		}
	}
	return false;
}

void CPreferences::SetLanguage()
{
	InitLanguages(GetLangDir());

	bool bFoundLang = false;
	if (m_wLanguageID)
		bFoundLang = LoadLangLib(GetLangDir(), m_wLanguageID);

	if (!bFoundLang){
		LANGID lidLocale = (LANGID)::GetThreadLocale();
		//LANGID lidLocalePri = PRIMARYLANGID(::GetThreadLocale());
		//LANGID lidLocaleSub = SUBLANGID(::GetThreadLocale());

		bFoundLang = LoadLangLib(GetLangDir(), lidLocale);
		if (!bFoundLang){
			LoadLangLib(GetLangDir(), LANGID_EN_US);
			m_wLanguageID = LANGID_EN_US;
			CString strLngEnglish = GetResString(IDS_MB_LANGUAGEINFO);
			AfxMessageBox(strLngEnglish, MB_ICONASTERISK);
		}
		else
			m_wLanguageID = lidLocale;
	}

	// if loading a string fails, set language to English
	if (GetResString(IDS_MB_LANGUAGEINFO).IsEmpty()) {
		LoadLangLib(GetLangDir(), LANGID_EN_US);
		m_wLanguageID = LANGID_EN_US;
	}

	InitThreadLocale();
}

bool CPreferences::IsLanguageSupported(LANGID lidSelected, bool bUpdateBefore){
	InitLanguages(GetLangDir(), bUpdateBefore);
	if (lidSelected == LANGID_EN_US)
		return true;
	const SLanguage* pLang = _aLanguages;
	for (;pLang->lid;pLang++){
		if (pLang->lid == lidSelected && pLang->bSupported){
			return CheckLangDLLVersion(GetLangDir()+CString(pLang->pszISOLocale) + _T(".dll"));
		}
	}
	return false; 
}

CString CPreferences::GetLangDLLNameByID(LANGID lidSelected){
	const SLanguage* pLang = _aLanguages;
	for (;pLang->lid;pLang++){
		if (pLang->lid == lidSelected)
			return CString(pLang->pszISOLocale) + _T(".dll"); 
	}
	ASSERT ( false );
	return CString("");
}

void CPreferences::SetRtlLocale(LCID lcid)
{
	const SLanguage* pLangs = _aLanguages;
	while (pLangs->lid)
	{
		if (pLangs->lid == LANGIDFROMLCID(lcid))
		{
			if (pLangs->uCodepage)
			{
				CString strCodepage;
				strCodepage.Format(_T(".%u"), pLangs->uCodepage);
				_tsetlocale(LC_CTYPE, strCodepage);
			}
			break;
		}
		pLangs++;
	}
}

void CPreferences::InitThreadLocale()
{
#ifdef _UNICODE
	ASSERT( m_wLanguageID != 0 );

	// NOTE: This function is for testing multi language support only.
	// NOTE: This function is *NOT* to be enabled in release builds nor to be offered by any Mod!
	if (theApp.GetProfileInt(_T("eMule"), _T("SetLanguageACP"), 0) != 0)
	{
		LCID lcidUser = GetUserDefaultLCID();		// Installation, or altered by user in control panel (WinXP)

		// get the ANSI codepage which is to be used for all non-Unicode conversions.
		LANGID lidSystem = m_wLanguageID;

		// get user's sorting preferences
		//UINT uSortIdUser = SORTIDFROMLCID(lcidUser);
		//UINT uSortVerUser = SORTVERSIONFROMLCID(lcidUser);
		// we can't use the same sorting paramters for 2 different Languages..
		UINT uSortIdUser = SORT_DEFAULT;
		UINT uSortVerUser = 0;

		// set thread locale, this is used for:
		//	- MBCS->Unicode conversions (e.g. search results).
		//	- Unicode->MBCS conversions (e.g. publishing local files (names) in network, or savint text files on local disk)...
		LCID lcid = MAKESORTLCID(lidSystem, uSortIdUser, uSortVerUser);
		SetThreadLocale(lcid);

		// if we set the thread locale (see comments above) we also have to specify the proper
		// codepage for the C-RTL, otherwise we may not be able to store some strings as MBCS
		// (Unicode->MBCS conversion may fail)
		SetRtlLocale(lcid);
	}
	else if (theApp.GetProfileInt(_T("eMule"), _T("SetSystemACP"), 0) != 0)
	{
		LCID lcidSystem = GetSystemDefaultLCID();	// Installation, or altered by user in control panel (WinXP)
		LCID lcidUser = GetUserDefaultLCID();		// Installation, or altered by user in control panel (WinXP)

		// get the ANSI codepage which is to be used for all non-Unicode conversions.
		LANGID lidSystem = LANGIDFROMLCID(lcidSystem);

		// get user's sorting preferences
		//UINT uSortIdUser = SORTIDFROMLCID(lcidUser);
		//UINT uSortVerUser = SORTVERSIONFROMLCID(lcidUser);
		// we can't use the same sorting paramters for 2 different Languages..
		UINT uSortIdUser = SORT_DEFAULT;
		UINT uSortVerUser = 0;

		// create a thread locale which gives full backward compability for users which had run ANSI emule on 
		// a system where the system's code page did not match the user's language..
		LCID lcid = MAKESORTLCID(lidSystem, uSortIdUser, uSortVerUser);
		LCID lcidThread = GetThreadLocale();
		if (lcidThread != lcid)
		{
			TRACE("+++ Setting thread locale: 0x%08x\n", lcid);
			SetThreadLocale(lcid);

			// if we set the thread locale (see comments above) we also have to specify the proper
			// codepage for the C-RTL, otherwise we may not be able to store some strings as MBCS
			// (Unicode->MBCS conversion may fail)
			SetRtlLocale(lcid);
		}
	}
#endif //_UNICODE
}

void InitThreadLocale()
{
	thePrefs.InitThreadLocale();
}

bool CheckThreadLocale()
{
#ifdef _UNICODE
	if (theApp.GetProfileInt(_T("eMule"), _T("SetLanguageACP"), 0) != 0)
		return true;
	int iSetSysACP = theApp.GetProfileInt(_T("eMule"), _T("SetSystemACP"), -1);
	if (iSetSysACP != -1)
		return true;
	iSetSysACP = 0;

	LCID lcidSystem = GetSystemDefaultLCID();	// Installation, or altered by user in control panel (WinXP)
	LCID lcidUser = GetUserDefaultLCID();		// Installation, or altered by user in control panel (WinXP)

	// get the ANSI codepage which is to be used for all non-Unicode conversions.
	LANGID lidSystem = LANGIDFROMLCID(lcidSystem);

	// get user's sorting preferences
	//UINT uSortIdUser = SORTIDFROMLCID(lcidUser);
	//UINT uSortVerUser = SORTVERSIONFROMLCID(lcidUser);
	// we can't use the same sorting paramters for 2 different Languages..
	UINT uSortIdUser = SORT_DEFAULT;
	UINT uSortVerUser = 0;

	// create a thread locale which gives full backward compability for users which had run ANSI emule on 
	// a system where the system's code page did not match the user's language..
	LCID lcid = MAKESORTLCID(lidSystem, uSortIdUser, uSortVerUser);
	LCID lcidThread = GetThreadLocale();
	if (lcidThread != lcid)
	{
		CString str =
			_T("eMule has detected that your system's codepage is not the same as eMule's current codepage. Do you want eMule to use your system's codepage for converting non-Unicode data to Unicode?\r\n")
			_T("\r\n")
			_T("If you want eMule to use your system's codepage for converting non-Unicode data, click 'Yes'. (This will give you more backward compatibility when reading older *.met files created with non-Unicode eMule versions.)\r\n")
			_T("\r\n")
			_T("If you want eMule to use the current codepage for converting non-Unicode data, click 'No'. (If you are using eMule the first time or if you don't care about this issue at all, chose this option. This is recommended.)\r\n")
			_T("\r\n")
			_T("If you want to cancel and create backup of all your config files or visit our forum to learn more about this issue, click 'Cancel'.\r\n");
		int iAnswer = AfxMessageBox(str, MB_ICONSTOP | MB_YESNOCANCEL | MB_DEFBUTTON2);
		if (iAnswer == IDCANCEL)
			return false;
		if (iAnswer == IDYES)
			iSetSysACP = 1;
	}
	theApp.WriteProfileInt(_T("eMule"), _T("SetSystemACP"), iSetSysACP);
#endif
	return true;
}

CString CPreferences::GetHtmlCharset()
{
	ASSERT( m_wLanguageID != 0 );

	LPCTSTR pszHtmlCharset = NULL;
	const SLanguage* pLangs = _aLanguages;
	while (pLangs->lid)
	{
		if (pLangs->lid == m_wLanguageID)
		{
			pszHtmlCharset = pLangs->pszHtmlCharset;
			break;
		}
		pLangs++;
	}

	if (pszHtmlCharset == NULL || pszHtmlCharset[0] == _T('\0'))
	{
		ASSERT(0); // should never come here

		// try to get charset from codepage
		LPCTSTR pszLcLocale = _tsetlocale(LC_CTYPE, NULL);
		if (pszLcLocale)
		{
			TCHAR szLocaleID[128];
			UINT uCodepage = 0;
			if (_stscanf(pszLcLocale, _T("%[a-zA-Z_].%u"), szLocaleID, &uCodepage) == 2 && uCodepage != 0)
			{
				CString strHtmlCodepage;
				strHtmlCodepage.Format(_T("windows-%u"), uCodepage);
				return strHtmlCodepage;
			}
		}
	}

	return pszHtmlCharset;
}